1. Diagram geometries for sharply n-transitive sets of permutations or of mappings

   • Antonio Pasini

   OriginalPaper Pages: 275 - 297

2. Desarguesian finite generalized quadrangles are classical or dual classical

   • H. Van Maldeghem
   • J. A. Thas
   • S.E. Payne

   OriginalPaper Pages: 299 - 305

3. Some highly symmetric authentication perpendicular arrays

   • Jürgen Bierbrauer
   • Tran Van Trung

   OriginalPaper Pages: 307 - 319

4. McFarland's conjecture on abelian difference sets with multiplier −1

   • S. L. Ma

   OriginalPaper Pages: 321 - 332

5. Difference sets in dihedral groups

   • Ka Hin Leung
   • Siu Lun Ma
   • Yan Loi Wong

   OriginalPaper Pages: 333 - 338